| Abbreviation | Definition |
|---|---|
| ASV | Adaptive Servo-Ventilator |
| ASWP | Attendant Services Waiver Program |
| AT | Active Treatment |
| ATACC | Anaesthesia, Trauma, And Critical Care |
| ATE | Acute Toxicity Estimate |
| ATG | Alternative Therapies Group |
| ATHP | Association of Teaching Hospital Pharmacists |
| ATLS | Advanced Trauma Life Support |
| ATR | Alaska Trauma Registry |
| ATSDR | Agency for Toxic Substances and Disease Registry |
| ATSM | Acute Traumatic Stress Management |
| ATU | Antenatal Testing Unit |
| ATU | Autorisation Temporaire d'Utilisation |
| AUB | Abnormal Uterine Bleeding |
| AUBT | Advanced Ultra-sonic Backscatter Technique |
| AUH | Aarhus University Hospital |
| AUH | Aleppo University Hospital |
| AUH | American University Hospital |
| AUP | Acceptable Use Procedure |
| AV | Anti Viral |